An umbrella issue for all coder use cases.

• Coder with Fly.io #6446
• Coder with Nix workspaces #6447
• Template with web RDP client for Windows #6448
• vcluster and Coder #6451
• Coder as render.com web service #6841
• Coder as a Heroku app #6959
• Coder as a railway app #6861
• Coder as a Kubesail app packages#155
• Coder Heroku workspace template #7256
• Official OpenStack example template #7679
• minikube install #9296
• add coder package derivation to nix flake #7834

Most of them are compiled in https://github.com/coder/packages and https://github.com/coder/coder/tree/main/examples/templates